USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

Polk County, Texas

Hydrologic Unit Code 12030202

Latitude 30°50'23", Longitude 94°58'11" NAD83

Spring discharges from the Coastal lowlands aquifer system (S100CSLLWD) national aquifer.

Spring discharges from the Chicot Aquifer (112CHCT) local aquifer.

**Period of record**
Begin Date	End Date	Count
1947-05-09	1947-05-09	1

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U.S. Department of the Interior | U.S. Geological Survey
Title: Surface Water for USA: Streamflow Measurements
URL: https://waterdata.usgs.gov/nwis/measurements?

Page Contact Information: Texas Water Data Support Team
Page Last Modified: 2025-09-08 23:48:46 EDT
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